Malware is software designed to infiltrate or damage a computer system without the owner’s consent. Malware should not be confused with defective software.That is software which has a legitimate purpose but contains harmful bugs. Malware is any program designed to cause problems with the normal use of a computer. Malware, running as over-privileged code can use this to subvert the system. “A Computer Virus” is commonly and often used in the general media to describe all kinds of malware. Another term that has been recently used for malware is badware. Some anti virus programs that fail to stop Malware and Trojans on the computer have a virus chest file. Techniques known as rootkits allow this concealment, by modifying the host operating system so that the malware is hidden from the user. Some malware programs install a key logger, which copies down the user’s keystrokes when entering a password, credit card number, or other information that may be useful to the creator. This is then transmitted to the malware creator automatically, enabling credit card fraud and other theft. Most systems contain bugs which may be exploited by malware. Newer spyware programs have specific counter measures against well known anti-malware products and may prevent them from running or being installed, or even uninstall them. One method is Gromozon, a new breed of malware.
Running anti-spyware software has become a widely recognized element of computer security best practices for Microsoft Windows desktop computers. Computers where Internet Explorer is the primary browser are particularly vulnerable to such attacks not only because it is the most widely-used but because its tight integration with Windows allows spybot access to crucial parts of the operating system.
Downloading programs only from reputable sources can provide some protection from this source of attack. One way to avoid spybot is to download Ad-Aware.